"Beat 'em up" is a term used to describe a genre of video games where the player's objective is to fight through levels of enemies using hand-to-hand combat. However, this term may not be appropriate or inclusive of all types of games that fall under this category. Some alternative synonyms for "beat 'em up" include brawler, fighting game, action game, and hack and slash. Each of these synonyms highlights different aspects of these types of games, whether it's the intense one-on-one battles in fighting games or the fast-paced action and level progression in a hack and slash game.